Feb 28, 2011 · Python’s assert statement is a debugging aid, not a mechanism for handling run-time errors. The goal of using assertions is to let developers find the likely root cause of a bug …

Is there a performance or code maintenance issue with using assert as part of the standard code instead of using it just for debugging purposes? Is assert x >= 0, 'x is less than zero' better or

I share your annoyance that the python assert has unique syntax relative to all other python programming constructs, and this syntax has yet again changed from python2 to python3 and …

Sep 5, 2012 · Note that Unicode strings which only contain ASCII will fail if checking types in this way, so you may want to do something like assert type(s) in (str, unicode) or assert …

108 I have been learning Python and the raise function* and assert are really similar (what I realised is that both of them crash the app, unlike try - except) and I can't see a situation …

Assert isn't considered safe in production code; it's tempting to write assert x<5 and then be very surprised when x is more than 5 and the software continues running because Python was run …

Jul 21, 2012 · Houston, we have a problem. Traceback (most recent call last): File "/tmp/poop.py", line 2, in <module> assert "birthday cake" == "ice cream cake", "I wanted pie" AssertionError: I …

El assert es una instruccion de Python que te permite definir condiciones que deban cumplirse siempre. En caso que la expresion booleana sea True assert no hace nada y en caso de …

Jun 15, 2018 · assert my_func(1) is False assert my_func(-1) is True assert my_func(0) is True This is "being pythonic" because as PEP-8 says, "explicit is always better than implicit". When …

I have to reiterate @Ctrl-C's comment: pytest.mark.xfail DOES NOT assert that an exception was raised, it simply allows it to be raised. This is not what the title of the question asks.